National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Manchester Airport (KMHT)

Lat: 42.93°NLon: 71.44°WElev: 223ft.

Mostly Cloudy

83°F

28°C

Humidity 49%
Wind Speed W 9 mph
Barometer 29.95 in (1015.1 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 28 Aug 2:53 pm EDT
Extended Forecast for

Merrimack NH

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 81. West wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    T-storms

  • Tonight

    Tonight: Patchy fog before 11pm, then patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 53. Northwest wind around 5 mph.

    Low: 53 °F

    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, sunny, with a high near 80. North wind around 5 mph becoming west in the afternoon.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 85. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 50 percent chance of showers after 9am. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 81. West wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Patchy fog before 11pm, then patchy fog after 4am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 53. Northwest wind around 5 mph.
Saturday
Patchy fog before 8am. Otherwise, sunny, with a high near 80. North wind around 5 mph becoming west in the afternoon.
Saturday Night
Mostly clear, with a low around 57. Calm wind.
Sunday
Mostly sunny, with a high near 85. Light southwest wind increasing to 5 to 10 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
A 50 percent chance of showers after 9am. Partly sunny, with a high near 79.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Wednesday
Showers likely. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 62.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 80.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Merrimack NH
 42.86°N 71.49°W (Elev. 118 ft)
Last Update:
2:16 pm EDT Aug 28, 2026
Forecast Valid:
3pm EDT Aug 28, 2026-6pm EDT Sep 4, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation